We have Enterprise 22.0 Desktop and for two users messenger "sticks" and when they close down QuickBooks, it keeps them logged in. Then we can't do the night updates and/or they can't log in again until we force close Messenger. We use messenger so we don't want to shut it off and it's just the strangest glitch. For the one user, we've even deleted their login and made them a new one and it's still happening. It happens on our workstations here at the office and when they remote in from home. We've done verify/rebuilds without it fixing it as well.